Lync Server Installation Error: Prerequisite installation failed: Wmf2008R2

Trying to Install Lync 2010 on Server 2008 R2 SP1, the installation failed with the following error while adding the first Lync Server Components:

“C:\Windows\servicing\Packages\Microsoft-Windows-Media-Format-Package~31bf3856ad364e35~amd64~~6.1.7600.16385.mum” Cannot be found.

I looked for that file. It’s no where to be found. But it looks like it has a different version:

%systemroot%\system32\dism.exe /online /add-package /packagepath:%windir%\servicing\Packages\Microsoft-Windows-Media-Format-Package~31bf3856ad364e35~amd64~~6.1.7601.17514.mum

I copied the file name mentioned in the error message, changed both file names (both .cat and .mum, didn’t know if they need each other during installation) and tried installing again.That Solved the problem. YA!!!

The official workaround for this issue has been released in Microsoft KB2522454